P0265 indicates the engine control module detected excessive voltage or resistance in the fuel injector circuit for cylinder 2. This suggests an electrical fault preventing the injector from operating correctly, often due to an open circuit or high resistance connection.
The internal coil of the injector may be open or have high resistance, triggering the high circuit reading.
Wires leading to the cylinder 2 injector may be chafed, broken, or corroded, increasing circuit resistance.
The connector plug at the injector may be loose, corroded, or contaminated, causing high resistance.
A specific fuse protecting the injector circuit may be blown, though this often affects multiple cylinders.
The internal driver circuit within the engine computer may be faulty, though this is statistically rare compared to external components.
No, this code is rarely caused by the computer itself. External wiring or the injector is the cause in the vast majority of cases.
It is not recommended. A non-functioning injector can cause engine damage, catalytic converter failure, and unsafe driving conditions.
No. Unless the issue was a temporary connection glitch, the code will return once the computer runs its self-tests again.
It often causes a misfire, but P0265 specifically identifies an electrical circuit fault rather than a combustion imbalance alone.